• American Thunder Crossmember-Back Exhaust System Fits 1964-1967 GM A-Body 3.00-Inch Stainless Steel System With V8 Engine Aggressive Sound Flowmaster
  • American Thunder Crossmember-Back Exhaust System Fits 1964-1967 GM A-Body 3.00-Inch Stainless Steel System With V8 Engine Aggressive Sound Flowmaster
  • American Thunder Crossmember-Back Exhaust System Fits 1964-1967 GM A-Body 3.00-Inch Stainless Steel System With V8 Engine Aggressive Sound Flowmaster
  • American Thunder Crossmember-Back Exhaust System Fits 1964-1967 GM A-Body 3.00-Inch Stainless Steel System With V8 Engine Aggressive Sound Flowmaster
  • American Thunder Crossmember-Back Exhaust System Fits 1964-1967 GM A-Body 3.00-Inch Stainless Steel System With V8 Engine Aggressive Sound Flowmaster
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    • American Thunder Crossmember-Back Exhaust System Fits 1964-1967 GM A-Body 3.00-Inch Stainless Steel System With V8 Engine Aggressive Sound Flowmaster
    • American Thunder Crossmember-Back Exhaust System Fits 1964-1967 GM A-Body 3.00-Inch Stainless Steel System With V8 Engine Aggressive Sound Flowmaster
    • American Thunder Crossmember-Back Exhaust System Fits 1964-1967 GM A-Body 3.00-Inch Stainless Steel System With V8 Engine Aggressive Sound Flowmaster
    • American Thunder Crossmember-Back Exhaust System Fits 1964-1967 GM A-Body 3.00-Inch Stainless Steel System With V8 Engine Aggressive Sound Flowmaster
    • American Thunder Crossmember-Back Exhaust System Fits 1964-1967 GM A-Body 3.00-Inch Stainless Steel System With V8 Engine Aggressive Sound Flowmaster
    • 817202.jpg
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    • 817202_66.jpg
    • aggressivesoundlevel.jpg
    • 817202.jpg
    • 817202_2.jpg
    • 817202_3.jpg
    • 817202_66.jpg
    • aggressivesoundlevel.jpg
    Sale!

    Flowmaster Flowmaster American Thunder Crossmember-Back Exhaust System 817202

    Vendor: Flowmaster
    Part Number: 817202
    Save $163
    $1,299.95 $1,462.95

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
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    Product DetailsFAQReviewsRelated Products
    The American Thunder® Crossmember-Back exhaust system is a true dual large 3.00-inch muscle car system for the person who is looking for a deep aggressive sound for their high horsepower vehicle. This stainless steel system is mandrel-bent for maximum performance, includes an H-pipe crossover to balance out the exhaust pressures, add hp and torque, and to help eliminate back-rap on deceleration. The specially selected Super 40® Series performance mufflers feature a large case to handle the added horsepower and provide a deep muscular tone flowing through the large 3.00-inch tailpipes. The American Thunder systems generally deliver an aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The sound level will depend greatly on the engine and level of modifications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Covered by our Lifetime Limited Warranty.


    Flowmaster Flowmaster American Thunder Crossmember-Back Exhaust System 817202


    Specifications:

    Brand Flowmaster
    California Proposition 65 Yes
    California Proposition 65 Chemical Name Nickel (Metallic)
    California Proposition 65 Chemical Name Chromium (hexavalent compounds)
    CARB (California) Compliant Yes
    Catalytic Converter Included No
    2874 0
    Category Exhaust
    3728 Flat Band
    1882 Yes
    Emission Code 5
    Exhaust Series American Thunder
    1162 3.00
    1161 0
    Exhaust Tip Quantity Sold Separately
    10980 Round
    9870 Dual Out Rear
    9870 Dual Out Side
    200 Natural
    353 No
    3390 Performance
    4364 Yes
    Heat Shield Included No
    Inlet Diameter 3.00
    596 Weld-On
    9871 3.00
    92 Yes
    11021 5.00
    11022 13.50
    11023 10.00
    11064 Chambered
    11048 5.00
    11049 13.50
    11050 10.00
    11073 Chambered
    9884 5.00
    1892 13.25
    4372 409 Stainless Steel
    4373 Oval
    9882 Black High-Temperature Paint Finish
    4367 No
    4368 No
    Muffler Included Yes
    9962 Slip-Fit
    4365 3.00
    4366 3.13
    9963 Slip-Fit
    4375 1
    4374 2
    Muffler Series Super 40 Series
    1174 Chambered
    part type Exhaust System
    3530 409 Stainless Steel
    Product Type Exhaust System
    Sound Level Aggressive
    4377 No
    Sub Category Exhaust and Tail Pipes
    4369 3.00
    4376 2
    4370 No
    Type Crossmember-back
    6014 No
    2126 Not Applicable
    Warning California Proposition 65
    Pipe Color Silver
    Drive 2WD
    9885 10.00
    Brand Flowmaster
    California Proposition 65 Yes
    California Proposition 65 Chemical Name Nickel (Metallic)
    California Proposition 65 Chemical Name Chromium (hexavalent compounds)
    CARB (California) Compliant Yes
    Catalytic Converter Included No
    2874 0
    Category Exhaust
    3728 Flat Band
    1882 Yes
    Emission Code 5
    Exhaust Series American Thunder
    1162 3.00
    1161 0
    Exhaust Tip Quantity Sold Separately
    10980 Round
    9870 Dual Out Rear
    9870 Dual Out Side
    200 Natural
    353 No
    3390 Performance
    4364 Yes
    Heat Shield Included No
    Inlet Diameter 3.00
    596 Weld-On
    9871 3.00
    92 Yes
    11021 5.00
    11022 13.50
    11023 10.00
    11064 Chambered
    11048 5.00
    11049 13.50
    11050 10.00
    11073 Chambered
    9884 5.00
    1892 13.25
    4372 409 Stainless Steel
    4373 Oval
    9882 Black High-Temperature Paint Finish
    4367 No
    4368 No
    Muffler Included Yes
    9962 Slip-Fit
    4365 3.00
    4366 3.13
    9963 Slip-Fit
    4375 1
    4374 2
    Muffler Series Super 40 Series
    1174 Chambered
    part type Exhaust System
    3530 409 Stainless Steel
    Product Type Exhaust System
    Sound Level Aggressive
    4377 No
    Sub Category Exhaust and Tail Pipes
    4369 3.00
    4376 2
    4370 No
    Type Crossmember-back
    6014 No
    2126 Not Applicable
    Warning California Proposition 65
    Pipe Color Silver
    Drive 2WD
    9885 10.00
    Description_ABR SYS 64-67 GM
    Description_SHO SYS 64-67 GM A-BODY
    Description_INV 64-67 GM A-BODY 3" AMT DOS 409S
    Description_ASC Does Not Include Header Reducers or Downpipes for Factory Manifolds
    Description_DES Flowmaster American Thunder Crossmember-Back Exhaust System
    Description_EXT Fits 1964-1967 GM A-Body 3.00-inch stainless steel system with V8 engine. - Aggressive sound
    Description_MKT The American Thunder® Crossmember-Back exhaust system is a true dual large 3.00-inch muscle car system for the person who is looking for a deep aggressive sound for their high horsepower vehicle. This stainless steel system is mandrel-bent for maximum performance, includes an H-pipe crossover to balance out the exhaust pressures, add hp and torque, and to help eliminate back-rap on deceleration. The specially selected Super 40® Series performance mufflers feature a large case to handle the added horsepower and provide a deep muscular tone flowing through the large 3.00-inch tailpipes. The American Thunder systems generally deliver an aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The sound level will depend greatly on the engine and level of modifications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Covered by our Lifetime Limited Warranty.
    Description_FAB Large 3.00-inch Exhaust System for High Horsepower Engines
    Description_FAB H-pipe Crossover for Maximum Power and Deep Tone
    Description_FAB Super 40 Series Mufflers for Deep Powerful Sound
    Description_FAB Includes Hangers and Hardware for Installation
    Description_FAB Mandrel-bent 16-gauge Stainless Steel Tubing
    Description_FAB Crossmember-Back True Dual Exhaust System
    Description_FAB Aggressive Exterior Exhaust Tone
    Description_FAB Lifetime Limited Warranty
    Description_ABR SYS 64-67 GM
    Description_SHO SYS 64-67 GM A-BODY
    Description_INV 64-67 GM A-BODY 3" AMT DOS 409S
    Description_ASC Does Not Include Header Reducers or Downpipes for Factory Manifolds
    Description_DES Flowmaster American Thunder Crossmember-Back Exhaust System
    Description_EXT Fits 1964-1967 GM A-Body 3.00-inch stainless steel system with V8 engine. - Aggressive sound
    Description_MKT The American Thunder® Crossmember-Back exhaust system is a true dual large 3.00-inch muscle car system for the person who is looking for a deep aggressive sound for their high horsepower vehicle. This stainless steel system is mandrel-bent for maximum performance, includes an H-pipe crossover to balance out the exhaust pressures, add hp and torque, and to help eliminate back-rap on deceleration. The specially selected Super 40® Series performance mufflers feature a large case to handle the added horsepower and provide a deep muscular tone flowing through the large 3.00-inch tailpipes. The American Thunder systems generally deliver an aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The sound level will depend greatly on the engine and level of modifications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Covered by our Lifetime Limited Warranty.
    Description_FAB Large 3.00-inch Exhaust System for High Horsepower Engines
    Description_FAB H-pipe Crossover for Maximum Power and Deep Tone
    Description_FAB Super 40 Series Mufflers for Deep Powerful Sound
    Description_FAB Includes Hangers and Hardware for Installation
    Description_FAB Mandrel-bent 16-gauge Stainless Steel Tubing
    Description_FAB Crossmember-Back True Dual Exhaust System
    Description_FAB Aggressive Exterior Exhaust Tone
    Description_FAB Lifetime Limited Warranty


    This Part Fits:

    Year Make Model Submodel Notes
    1965 Buick Gran Sport Base
    1966 Buick Gran Sport Base
    1967 Buick Gran Sport Base
    1967 Buick Gran Sport Base
    1964 Buick Skylark Base
    1965 Buick Skylark Base
    1965 Buick Skylark Base
    1966 Buick Skylark Base
    1966 Buick Skylark Base
    1966 Buick Skylark Base
    1967 Buick Skylark Base
    1967 Buick Skylark Base
    1967 Buick Skylark Base
    1964 Buick Special Base
    1965 Buick Special Base
    1966 Buick Special Base
    1966 Buick Special Base
    1967 Buick Special Base
    1967 Buick Special Base
    1964 Buick Special Deluxe
    1965 Buick Special Deluxe
    1966 Buick Special Deluxe
    1967 Buick Special Deluxe
    1964 Buick Sportwagon Base
    1965 Buick Sportwagon Base
    1966 Buick Sportwagon Base
    1967 Buick Sportwagon Base
    1966 Buick Sportwagon Custom
    1967 Chevrolet Chevelle 300
    1967 Chevrolet Chevelle 300
    1967 Chevrolet Chevelle 300 Deluxe
    1967 Chevrolet Chevelle 300 Deluxe
    1967 Chevrolet Chevelle Base
    1967 Chevrolet Chevelle Base
    1967 Chevrolet Chevelle Concours
    1967 Chevrolet Chevelle Deluxe
    1964 Chevrolet Chevelle SS
    1964 Chevrolet Chevelle SS
    1965 Chevrolet Chevelle SS
    1965 Chevrolet Chevelle SS
    1965 Chevrolet Chevelle SS
    1966 Chevrolet Chevelle SS
    1966 Chevrolet Chevelle SS
    1966 Chevrolet Chevelle SS
    1967 Chevrolet Chevelle SS
    1964 Chevrolet El Camino Base
    1964 Chevrolet El Camino Base
    1965 Chevrolet El Camino Base
    1965 Chevrolet El Camino Base
    1966 Chevrolet El Camino Base
    1966 Chevrolet El Camino Base
    1966 Chevrolet El Camino Base
    1967 Chevrolet El Camino Base
    1967 Chevrolet El Camino Base
    1967 Chevrolet El Camino Base
    1967 Chevrolet Malibu Base
    1967 Chevrolet Malibu Base
    1964 Oldsmobile 442 Base
    1965 Oldsmobile 442 Base
    1966 Oldsmobile 442 Base
    1967 Oldsmobile 442 Base
    1964 Oldsmobile Cutlass Base
    1965 Oldsmobile Cutlass Base
    1965 Oldsmobile Cutlass Base
    1966 Oldsmobile Cutlass Base
    1966 Oldsmobile Cutlass Base
    1967 Oldsmobile Cutlass Base
    1967 Oldsmobile Cutlass Base
    1964 Oldsmobile Cutlass Holiday
    1965 Oldsmobile Cutlass Holiday
    1965 Oldsmobile Cutlass Holiday
    1966 Oldsmobile Cutlass Holiday
    1966 Oldsmobile Cutlass Holiday
    1967 Oldsmobile Cutlass Holiday
    1967 Oldsmobile Cutlass Holiday
    1967 Oldsmobile Cutlass Turnpike Cruiser
    1967 Oldsmobile Cutlass Turnpike Cruiser
    1967 Oldsmobile Cutlass Supreme Base
    1964 Oldsmobile F85 Base
    1965 Oldsmobile F85 Base
    1965 Oldsmobile F85 Base
    1966 Oldsmobile F85 Base
    1966 Oldsmobile F85 Base
    1967 Oldsmobile F85 Base
    1964 Oldsmobile F85 Deluxe
    1965 Oldsmobile F85 Deluxe
    1966 Oldsmobile F85 Deluxe
    1966 Oldsmobile F85 Holiday
    1966 Oldsmobile F85 Holiday
    1964 Oldsmobile Vista Cruiser Base
    1965 Oldsmobile Vista Cruiser Base
    1966 Oldsmobile Vista Cruiser Base
    1967 Oldsmobile Vista Cruiser Base
    1964 Oldsmobile Vista Cruiser Custom
    1965 Oldsmobile Vista Cruiser Custom
    1966 Oldsmobile Vista Cruiser Custom
    1967 Oldsmobile Vista Cruiser Custom
    1964 Pontiac Grand Prix Base
    1964 Pontiac Grand Prix Base
    1965 Pontiac Grand Prix Base
    1965 Pontiac Grand Prix Base
    1966 Pontiac Grand Prix Base
    1966 Pontiac Grand Prix Base
    1964 Pontiac GTO Base
    1965 Pontiac GTO Base
    1966 Pontiac GTO Base
    1967 Pontiac GTO Base
    1964 Pontiac LeMans Base
    1965 Pontiac LeMans Base
    1966 Pontiac LeMans Base
    1967 Pontiac LeMans Base
    1964 Pontiac Tempest Base
    1965 Pontiac Tempest Base
    1966 Pontiac Tempest Base
    1967 Pontiac Tempest Base
    1964 Pontiac Tempest Safari
    1965 Pontiac Tempest Safari
    1966 Pontiac Tempest Safari
    1967 Pontiac Tempest Safari
    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy
    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy
    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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